beta. -. gamma. angular correlation in /sup 20/Na

Journal Article · Fri May 01 04:00:00 EDT 1981 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.23.2245· OSTI ID:6533689

Tribble, R E; May, D P; Tanner, D M

The ..beta..-..gamma.. angular correlation for the decay of /sup 20/Na has been measured using a symmetric four detector system. The /sup 20/Na activity was produced by the /sup 20/Ne(p,n)/sup 20/Na reaction and transported by a He jet to the detector chamber. Care was exercised to ensure that the ..beta.. source was well defined. Correlation data were acquired for q/sub ..beta..-;/ = 90/sup 0/ and 180/sup 0/ as a function of positron energy. The correlation data were analyzed for both linear and quadratic energy dependence. We report as the best estimate for the linear coefficient (-5.0 +- 0.8) x 10/sup -3/ MeV/sup -1/ and for the quadratic coefficient (2.9 +- 0.8) x 10/sup -4/ MeV/sup -2/. Incorporating the results with other measurements in the A = 20 system, we find an upper limit for the second class current contribution to the correlation which is no more than 20% of the weak magnetism contribution and is consistent with zero.

• Research Organization: Department of Physics, Princeton University, Princeton, New Jersey 08540
• OSTI ID: 6533689
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 23:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALGEBRAIC CURRENTS
ALKALI METAL ISOTOPES
ANGULAR CORRELATION
BARYON REACTIONS
BARYONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CORRELATIONS
CURRENTS
CYCLIC ACCELERATORS
CYCLOTRONS
DECAY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
ENERGY-LEVEL TRANSITIONS
FERMIONS
FORM FACTORS
GAMMA RADIATION
HADRON REACTIONS
HADRONS
IMPULSE APPROXIMATION
IONIZING RADIATIONS
ISOCHRONOUS CYCLOTRONS
ISOTOPES
LIGHT NUCLEI
M1-TRANSITIONS
MATRIX ELEMENTS
MULTIPOLE TRANSITIONS
NEON 20 TARGET
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
ODD-ODD NUCLEI
PARTICLE PROPERTIES
PRINCETON CYCLOTRON
PROTON REACTIONS
RADIATIONS
RADIOISOTOPES
SECOND-CLASS CURRENTS
SECONDS LIVING RADIOISOTOPES
SODIUM 20
SODIUM ISOTOPES
TARGETS